不减数分裂

Apomixis is a means of asexual reproduction by which plants produce embryos without meiosis and fertilization; thus the embryos is of clonal, maternal origin.

无融合生殖是指不经减数分裂和受精作用而产生胚的一种无性繁殖，因此是胚的克隆，母系繁殖。

Apospory The devlopment of the gametophyte directly from the cell of a sporophyte, thus bypassing meiosis and spore production.

无孢子生殖：配子体的发育直接来自孢子体的细胞而不经过减数分裂和孢子产生的生殖过程。

The results of our study have demonstrated that,(1) quadrivanlents in diakinesis Ⅰ are ideal materials for micromanipulation;(2) compared with the instrument used to microisolate chromosomes with a dissecting needle perched on a dissecting microscope outfitting with a micromanipulator or laser beam, the equipment most common used in our study is relatively inexpensive and the techniques could be established as a standard procedure in the ordinary laboratory;(3) the gene mapping methods developed in the study is an efficient and fast approach that could advance gene mapping of fish and other species.

本研究结果表明，（1）减数分裂Ⅰ终变期染色体标本是进行染色体显微操作研究的理想材料；（2）与显微操作仪和微激光分离相比较，本研究所探索的显微分离染色体方法不需要昂贵仪器，在常规实验室即可操作，具有广泛的普及应用意义；（3）把染色体显微操作应用于基因定位这种构思是完全可行的。这种基因定位方法简明而快捷，从而为鱼类及其它物种染色体定位研究开辟了一个新的研究方式和途径。

In Peiai 64S, the microtubules showed abnormal patterns of distribution from pre_meiotic interphase to metaphase Ⅰ. For example the broad band of perinuclear microtubules seen at diakinesis in IR36 was much disorganized and loosened in Peiai 64S.

(1)在偶线期具极性分布的微管分布不存在；(2 )在小孢子母细胞减数分裂期间的细胞内出现许多特别粗的微管束；(3)在终变期围绕核的微管宽带结构松散及内含微管密度低。

The basidioma is composed mainly of sterile tightly packed hyphae; in most species there is a distinct fertile layer, the hymenium, on the surface of the basidioma that bears the basidial hyphae which, after meiosis, give rise to the basidiospores.

担子果主要由紧密缠绕的不育菌丝组成，多数种类还有明显的可育层子实层，子实层位于担子果的表面，由菌丝形成担子，减数分裂后产生担孢子（参见 basidium

Meiosis of pollen mother cells of t he mutant and its receptor(line 814527) were observed.

对该不育变异体和受体花粉母细胞减数分裂过程进行观察。

Meiosis of pollen mother cells of the mutant and its receptor(line 814527) were observed.

对该不育变异体和受体花粉母细胞减数分裂过程进行观察。

It also led to the discovery in 1916 by Calvin Bridges of the phenomenon of nondisjunction, in which a chromosome pair fails to segregate during meiosis.

伴性遗传又导致了不分离现象的发现，即在减数分裂中，染色体对不分离。

The result is consistent with previous studies. Whereas, tapetal cells of sterile anthers were disintegrated since tetrad cells were disjoined, indicating that disintegration of tapetal cells is earlier occurred in sterile anther than that in fertile anther. DNA ladder revealed that the cleavage of nuclear DNA into oligonucleosome-sized fragments to

结果表明，在花粉母细胞减数分裂后的四分体解离时期，不育花药的绒粘层细胞较可育花药提前开始裂解；在不育系S-Mo17rf3rf3花药和花粉S-(rf3)中均明显出现PCD过程的DNA片段化以及线粒体细胞色素C外渗的现象，证明了玉米CMS-S的花粉败育与花药绒粘层细胞的提前凋亡和小孢子细胞的细胞程序性死亡有关。

The failure of homologous chromosomes to pair during meiosis.

不联会在减数分裂期间同源染色体不联会成对。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。